Yes, I agree, but really we shouldn't even be comparing "arrests" and "fine". The latter is a punishment, and the former is a practical measure to prevent a future crime (such as destruction of evidence) or to prevent someone from evading justice (by destroying evidence, hiding or leaving the country, for example). Obviously some police forces do use arrests and searches and confiscation of "evidence" as a form of extrajudicial punishment but that shouldn't be allowed.